EP 0892719 B1 2002-09-04 - HIGH MODULUS FILM

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Publication

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US 9705644 W 19970404

US 63144296 A 19960412

Abstract (en)

[origin: WO9738857A1] A film includes at least one layer comprising a blend of an ethylene polymer having a density of at least 0.925 grams per cubic centimeter, and an ethylene copolymer selected from the group consisting of ethylene/ester copolymer, and ethylene/alpha-olefin cop olymer. The film is preferably substantially free from linear low density polyethylene. The film can be a monolayer or multilayer film, and can comprise a core layer comprising an ethylene polymer having a density of at least 0,925 grams per cubic centimeter; and one or more outer layers with the above described blend. At least one intermediate layer comprising an ethylene copolymer having a density of less than 0.925 grams per cubic centimeter can also be included. The film preferably has a thickness of less than 0.60 mils; a shrink force of less than 0.35 pounds in the longitudinal direction, and less than 0,30 pounds in the transverse direction; and a modulus of at least 60,000 psi in the longitudinal direction, and at least 75,000 psi in the transverse direction. The film offers beneficial properties for packaging applications.